Train stop and train control



H. B. SPENCER.

TNMN sToP AND TRAIN CONTROL.

APPLICATION FILED 050.27. l92l.

Patented May 2, 1922.

3 SHEETS-SHEET l.

' ...7- fA/m' Hin/ME-FENL'HT- H. B. SPENCER. TRAIN sor AND TRAIN coNnoL. APPLICATION FILI-ID DEC-27. 1921.

Patented May 2,1922.

3 SHEETS-SHEET 2 lr l l I l I IIL 1/ WMM H. s. SPENCER.v

T-RAIN -STOP AND TRAIN CONTROL. APPuATloN FILED nc.2'1.'192|.

1,414,596. A Patented 2, 1922.

`3 SH SHEET 3.

HENRY BUSH'l SPENCER, OF OTTAWA, ONTARIO, CANADA.

rss

TRAIN-sro? am; TRAIN contraer..

i Topall whom t may concern:

Be it known that l, HENRY BUsHSrnNoER, asubject of the King' of Great'Brltain, and

n residentof the city of Ottawa, in theProvkince of Ontario and Dominion of Canada,

have inventedcertain new and useful Improvements in Train Stops and Train Qontrol, of which'the following is a ,specification.

This kinventionrelatesy to improvements in train stops, and' particularly to that class of device in which the train is automatically stopped by the application of the air brakes should it overrun a warning torpedo placed on the track, andthe objects of the .invention are to enable the train after being stopped to proceed slowly on its Vway without the Y necessityy of the engineer leaving his cab to reset the trainstopping device.

Further objects are to provide a simple and effective device of this character which f will cause the stopping 'of a train should the' Vvbed, the operation of the jdevice being such engine be derailed from any cause whatever,

whereby the train will be broughtto a stop before there is anyloss ,of life or heavyV damage done to equipment, track or roadthat the engine and train will, inall probability, bey brought to a stopwhile in upright position and vbefore overturning, the brakes being automatically applied much quickerl than they could be applied by the l engineer through the operation of the enwhich latter is shown in part in dotted lines.`

Figure 2 is an elevation,lillustrating the operation of the device upon explosion of the torpedo.

lFigure 3 is a perspective view of the signalling element.

Figure 4 is a side elevation` of the signalling element.

`Specification of Letters Patent.

Application flied December 27, 1921. semina'. 524,992. Y

'cured to the front of the locomotive.

Patented YMay 2,1922.

Figure 5 is a sectional view through the same. v f

Figure 6 is a front elevation.A Figure 7 is asectional detail, showing the supporting means forthe frangible element.

In the drawings, like characters of reference indicate corresponding parts in all the figures.

Referring .to the drawings :l A represents a locomotive ofl any usual construction well known inthe art, and B represents an yextension of the ordinary well-known brake pipe line; C,'the engineers brake valve; D, an air gauge-,ofv any convenient type; E, a cut-out cock or valve; and F the signalling element. The signalling element is connected toL the gauge vD by a connecting conduitA or pipe Gwhich,

within the engineerscabinis connected to T-coupling 10 from which a branch pipe 11 extends to the cock E, the opposite side of the cock being connected to a T-coupling 12 in the train line pipeB which is connected to the engineers valve C. A

` The signalling device Fjcomprises atubular member 13 having its outer periphery Vstepped andmformed with a shoulder 14 adapted to abut a supporting bracket 15 se- The outer extremity of the Atubular member F is Vscrew-threaded at 16 to, receive an vinternally screw-threaded coupling 17 whichconnects with the threaded end of the pipe G.

The opposite endvofv the-,sleeve 13 tovtvhat' vformed with the threading16 is, provided with an enlarged head 18 externallyjscrewthreaded and having a cap f 19 internally screw-threaded and engaged with thef threadingy thereon, the cap being formed with an l inwardly-turned annulary flange-"21 which retains the frangible member 22 in position, said member being conveniently formed of a glass disc having resilient packing rings 23 and 24 of rubber or the like on opposite sides thereof and held between the flange 21 and the face of the head 18, respectively. The glass is thus provided with an air-tight joint.

In order to prevent injury to the packing Vring 24, a thinhmetallic ring or washer 25 may be provided .between it and the face of esl the head 18. The frangible member 22 is angularly disposed. in front of thelocomotive and located'in close proximity to the front wheel and tothe ball of the rail, and

maybe connected to the bracket by a suitable clamp 26 connected by bolts 27 to the brackkets. The connecting pipe YG may be also provided at intervals with clips 28by which it is v attached tothe locomotive.

`In railway practice it is common to use torpedoes on the railway track, and this improved train stop is utilized in conjunction withthese torpedoes. When aftorpedo is placed upon a rail by a trackman, or other Y jY-per'son, for the object of warning an ap- Y signal is not heard or is disregarded. Suchv y from the train line pipe B connected thereproaching train, it often happens that the i a-,torpedo II is shown on the track in Figure '1,'l and, if a locomotive equipped with this Vimproved train stopping device approaches :and passes over the torpedo H, then the tors` pedo is exploded and the concussionshatters the glass 22, -allowing the air to escape from vthe Vpipe Gry, which allows kthe air to vescape vwith through the conduit 1l, the valve E being in suchposition that this conduit is opened; yThis will at oncebring the train to a standstill, and the engineer may thereupon `turn kthe cock E which will close the train line pipe and permit the train to proceed, but, Vhaving been warned by the breaking of the'frangible member, he will only proceed at slowspeed until the next station, when the y frangible glass disc 22 may berep'laced.

Y cab.v

' 'tender'will,iii-necessary, be equipped with Y Y the ltrai-n stop, so that, in the Vevent of a lThe gauge D indicates when pressureis "maintained within the pipe G, and, when thedevice is in normal condition, the gauge will show pressure. VkVhenY the cock E is `rturned after operation of the warning signal,

no' pressureV will remain in the conduit Gr, and consequently nothing'will be indicated on `the gauge D, and this will constitute a warning to the engineer that'his signal is not inoperative condition and will remind :him in case'it s'houldbe overlooked.YV

It will be observed'that it is possible forV the engineer torclose the conduit G and proceedon `his way without leaving the engine Both sides of theV iocmouve and, the

`vlocomotive being turnedon ,a turntable or usedf'for .backing up purposesor any other function in railway practice, the train stop will always be availableor operative.

After the agman `places a torpedo on the lrail,-hewill take up his position the proper distance from the torpedo, flag or fuses, as

v per regulations, and when he hasYthe-train under control, he may remove the torpedo and give the usual hand proceed caution signal until he can converse with the 'engineer and explain to him why the train has been stopped. On the-other hand, if the engineer fails 'to recognize the flagmans Vsignal and passes the iiagman, then the Vtorpedo will stop Yhim inthe manner above def scribed vandy thereby `prevent a 'rear rend or other accident.

vAs many changes could berl'na'de` in 'the above construction and many widelydiier l ent yembodiments of my invention withintheseope of the claims, constructedV without departing from the spirit or scope thereof, it is intended Ithat all matter contained in the accompanying specification and *draws ings'shallpbe interpretedas illustrative and not in a limiting sense.

connected onjtheopposite side'ofthe valve -to the irst-mentioned T-coup'ling, an air gauge connectedftoone side of the second ble ,signalling V device connected to vsaid `last-'mentioned conduit 'and located in close ,proximity to the` railand adapted Lto `Vbe* "T-coupling, a conduit'connected tothe'oppol- A sitel side ofthe second T-coupling, a frangi-- broken by the'exploding of a torpedo, all Y as substantially herein' Set forth andv described. Y

Y In witness whereof I have hereunto set my hand in the presence ofva witness.

vHENRY BUSH SPENCER,

Witness: Y

RUssEL S. SMART. Y 

